package cn.tedu.sp06.fb;

import cn.tedu.web.util.JsonResult;
import org.apache.http.client.methods.HttpHead;
import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.http.server.reactive.HttpHandler;
import org.springframework.stereotype.Component;
import sun.security.jca.ServiceId;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;

/**
 * @author :Colin
 * @version 创建时间: 2021/9/13 11:38
 */
@Component
public class ItemFB implements FallbackProvider {
    //返回一个service-id,表示当前降级类时针对哪个后台服务的
    @Override
    public String getRoute() {
        return "item-service";
    }

    @Override
    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
        return new ClientHttpResponse() {
            @Override
            public HttpStatus getStatusCode() throws IOException {

                return HttpStatus.INTERNAL_SERVER_ERROR;
            }

            @Override
            public int getRawStatusCode() throws IOException {
                return HttpStatus.INTERNAL_SERVER_ERROR.value();
            }

            @Override
            public String getStatusText() throws IOException {
                return HttpStatus.INTERNAL_SERVER_ERROR.getReasonPhrase();
            }

            @Override
            public void close() {

            }

            @Override
            public InputStream getBody() throws IOException {

                String json = JsonResult.err().code(500).msg("调用后台出错").toString();
                return new ByteArrayInputStream(json.getBytes("UTF-8"));
            }

            @Override
            public HttpHeaders getHeaders() {
                HttpHeaders h = new HttpHeaders();
                h.add("Content-Type","application/json;charset=UTF-8");
                return h ;
            }
        };
    }
}
